Meeeitt gally



(No Model.)

. M. GALLY.

MECHANICAL MUSICAL INSTRUMENT.

No. 296,685. Patented Apr. 8,1884.

a, I, In vent or.

UNITED STATES PATENT OFFI E.

MERRITI GALLY, on NEW YORK, N. Y.

MECHANICAL MUSICAL INSTRUMENT.

SPECIFICATION forming part of Letters Patent No. 296.685, dated April 8, 1884.

Application filed J anuary 16, 1884. (No model.)

a. To all whom, it may concern:

Be it known that I, MERRITT GALLY, a citizen of the United States, residing in New York, in the county and State of New York, have invented certain new and useful Improvements in devices for rolling and re-rolling the music sheet of a mechanical musical instrument, of which the following is a specification.

My invention consists of a friction device, operating in connection with the delivery roll of the music-sheet of a mechanical musical instrument, and operated by means of the motor of the take-up roller, whereby a constant friction movement of the devicefkeeps the sheet taut while being wound on the take-up roller, and rewinds the music on the delivery roller, when the take-up roller is freed from connection with its drivingmotor.

In the accompanying drawings, Figure 1 is a side elevation, showing the devices of the invention, and the tube-board, music-sheet,

bellows, &c., of a mechanical musical instrument. Fig. 2 is a plan of the same. Fig. 3 is an end view of the delivery-roller, and Fig. 4 is a view in cross-section of the friction devices.

It is customary to use simply a holding friction, independent of the motor of the music-sheet, for holding the sheet taut while being wound from the delivery-roller; but I find that a constant moving friction is much better, as it takes up any slack there may be in the music-sheet on the delivery-rolls, holds the sheet taut, and also serves as a rewind for the music-sheet as soon as the take-up roll is freed from its motor.

In Figs. .1 and 2 the motor-shaftV is shown as the driving-motor for the take-up roller D, and also the friction-wheel B, which connects with the receivingroller N. The drivingwheel F is connected with the friction-wheel B by means of a belt, J, or other suitable gearing, so that wheel B shall have a constant tendency to rewind the sheet on roller N; but during the more positive connection of roller D and driver E, wheel B only serves as aholdback for keeping the sheet taut, as roller N is driven only by yielding friction. Any suitable slipping friction device may be used for this purpose.

The belt J may be allowed to slip on a pulley which is made fast to the driving-journal of the roller N, or an additional friction device may be used, as shown, wheel B being loose on journal R, and a pressing friction, 0, made fast to journal R, the friction being kept constant by means of spring E.

Any suit-able driving-motor may be used instead of crank G, and may be connected or not with the bellows of the instrument, as desired.

The eccentric H is used to connect roller D with its driver V, to wind the music-sheet A on roller D, and to free roller D from its driver to allow the friction device 0 to rewind the sheets.

It will be observed that the rewinding of the sheet on the delivery-roller N begins instantly as the take-up roller is freed from its driving-power, and that the rewinding is accomplished by the same mechanism which serves to hold the sheet taut while the winding from the delivery-roll to the take-up roll takes place.

What I claim is 1. In a mechanical musical instrument, the combination, with a sheet-winding device operating on the take-up roll, of an oppositelyactingfriction sheet -winding device of less power, substantially as described, simultaneously operating on the delivery-roll, as set forth.

2. In a mechanical musical instrument, the combination, with a sheet-winding device operating on the take-up roll, of an oppositelyacting friction sheet winding device of less power, simultaneously operating on the delivery-roll, and mechanism, substantially as described, connecting the same with the motor of the take-up roll, all substantially as shown and set forth.

3. The combination, with the take up roll and its power mechanism, constructed substantially as described, of the motor-shaft, a belt leading therefrom, and the oppositelyacting friction retarding and rewinding device, constructed substantially as described, and arranged to be driven by the belt and operate on the delivery-roll, as set forth.

- MERRITT GALLY.

Witnesses:

' WM. A. GALLY, D. B. GALLY. 

